From: kernel test robot <lkp@intel.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
"Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Subject: include/linux/eventpoll.h:81:13: sparse: sparse: restricted __poll_t degrades to integer
Date: Wed, 23 Feb 2022 20:47:19 +0800 [thread overview]
Message-ID: <202202231910.H30peLyl-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 5c1ee569660d4a205dced9cb4d0306b907fb7599
commit: 249dbe74d3c4b568a623fb55c56cddf19fdf0b89 ARM: 9108/1: oabi-compat: rework epoll_wait/epoll_pwait emulation
date: 6 months ago
config: riscv-randconfig-s031-20220221 (https://download.01.org/0day-ci/archive/20220223/202202231910.H30peLyl-lkp@intel.com/config)
compiler: riscv32-linux-gcc (GCC) 11.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=249dbe74d3c4b568a623fb55c56cddf19fdf0b89
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 249dbe74d3c4b568a623fb55c56cddf19fdf0b89
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=riscv SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>)
fs/eventpoll.c: note: in included file:
>> include/linux/eventpoll.h:81:13: sparse: sparse: restricted __poll_t degrades to integer
>> include/linux/eventpoll.h:81:13: sparse: sparse: restricted __poll_t degrades to integer
include/linux/eventpoll.h:81:13: sparse: sparse: cast from restricted __poll_t
vim +81 include/linux/eventpoll.h
70
71 #if defined(CONFIG_ARM) && defined(CONFIG_OABI_COMPAT)
72 /* ARM OABI has an incompatible struct layout and needs a special handler */
73 extern struct epoll_event __user *
74 epoll_put_uevent(__poll_t revents, __u64 data,
75 struct epoll_event __user *uevent);
76 #else
77 static inline struct epoll_event __user *
78 epoll_put_uevent(__poll_t revents, __u64 data,
79 struct epoll_event __user *uevent)
80 {
> 81 if (__put_user(revents, &uevent->events) ||
82 __put_user(data, &uevent->data))
83 return NULL;
84
85 return uevent+1;
86 }
87 #endif
88
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
next reply other threads:[~2022-02-23 12:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-23 12:47 kernel test robot [this message]
2022-02-23 12:59 ` include/linux/eventpoll.h:81:13: sparse: sparse: restricted __poll_t degrades to integer Arnd Bergmann
-- strict thread matches above, loose matches on Subject: below --
2022-10-02 0:57 kernel test robot
2022-01-29 21:57 kernel test robot
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